Many cities in Europe are adopting legislation that is forbidding the use of fossil fuels in building equipment used in their central areas.
There are also regulations that limits the noise and other emissions allowed in the same areas.
This has led to that many construction companies are turning to the use of electrical building machinery. This in turn is leading to the use of battery banks to provide the electricity on building sites.
Battery banks are noiseless and can provide a lot of power during short periods. This is an advantage when for example building cranes are used. Those cranes are consuming rather high amperages during short bursts.
The battery banks have limited amounts of energy even if they can provide the high power to supply the cranes and other high power consumers.
To avoid the very high costs for large battery banks, existing electric Mains supply, if available and allowed, is used to charge the batteries constantly, which solves the problem with long time storage battery capacity.
If Mains electric power is not available or not allowed for use during construction work, a gen set can be used to charge the battery bank.
Such gen sets have to be able to use renewable fuel and to have as low exhaust emissions and to be as silent as possible, to be allowed at such sites. As the gen sets are used to charge the battery bank at a constant load they don’t need to be dimensioned for the peak loads of the site only for the load of the battery charger.
This results in that gen sets can be used that are considerably smaller than the gen sets that has been used before on building sites.
A range of smaller super-silent gen sets with stage V approved engines that also can be operated on HVO synthetic diesel or other EN 15940 renewable fuels are now required by the construction industry. A sturdy, easy to handle, canopy with a large tank, allowing for a long autonomy are other factors asked for. /HE